This business appears on my credit report.

This business appears on my credit report.
I apparently owe $75 that i have no clue in regards to what it is about.
I have tried numerous times to call, and they put me on hold endlessly; I also email them. no answer.
Next I will send them a letter or fax. But if they don't even answer calls or return emails I have no confidence doing so will help me resolve anything either.
I have to try and go in person as a last resort.
Problem is I live in Queens NY so its not nearby I have to go to.
Good luck to anyone that has same or similar problem as me, or any other issue with this company.

Alexander Tooze